Conn_2015_Science_349_540

Reference

Title : PLANT EVOLUTION. Convergent evolution of strigolactone perception enabled host detection in parasitic plants - Conn_2015_Science_349_540
Author(s) : Conn CE , Bythell-Douglas R , Neumann D , Yoshida S , Whittington B , Westwood JH , Shirasu K , Bond CS , Dyer KA , Nelson DC
Ref : Science , 349 :540 , 2015
Abstract : Obligate parasitic plants in the Orobanchaceae germinate after sensing plant hormones, strigolactones, exuded from host roots. In Arabidopsis thaliana, the alpha/beta-hydrolase D14 acts as a strigolactone receptor that controls shoot branching, whereas its ancestral paralog, KAI2, mediates karrikin-specific germination responses. We observed that KAI2, but not D14, is present at higher copy numbers in parasitic species than in nonparasitic relatives. KAI2 paralogs in parasites are distributed into three phylogenetic clades. The fastest-evolving clade, KAI2d, contains the majority of KAI2 paralogs. Homology models predict that the ligand-binding pockets of KAI2d resemble D14. KAI2d transgenes confer strigolactone-specific germination responses to Arabidopsis thaliana. Thus, the KAI2 paralogs D14 and KAI2d underwent convergent evolution of strigolactone recognition, respectively enabling developmental responses to strigolactones in angiosperms and host detection in parasites.
ESTHER : Conn_2015_Science_349_540
PubMedSearch : Conn_2015_Science_349_540
PubMedID: 26228149
Gene_locus related to this paper: phera-PrKAI2c , phera-PrKAI2d1 , phera-PrKAI2d2 , phera-PrKAI2d3 , phera-PrKAI2d4 , strhe-ShD14 , orocc-OcKAI2d2 , trivs-TvKAI2c , strhe-ShKAI2D2 , 9lami-a0a2u8xq24 , orocc-OcD14 , conam-CaKAI2c , 9lami-a0a2u8xq49 , 9lami-a0a2u8xq53 , oroce-OcKAI2d2 , oroce-OcKAI2d3 , orocc-OcKAI2d4 , orocc-OcKAI2d1 , 9lami-a0a2u8xqa1 , oroce-OcD14 , 9lami-a0a2u8xqb0 , strhe-sHKAI2d1 , conam-CaD14 , 9lami-a0a2u8xqc8 , 9lami-a0a2u8xqd2 , 9lami-a0a2u8xqe1 , 9lami-a0a2u8xqh0 , oroce-OcKAI2d1 , orocc-OcKAI2c , strhe-ShKAI2c , 9lami-a0a2u8xqv8 , orocc-OcKAI2d6 , orocc-OcKAI2d5 , 9lami-a0a2u8xr73 , oroce-OcKAI2c , 9lami-a0a2u8xr89 , orocc-OcKAI2d3 , 9lami-a0a2u8xrl6 , strhe-ShKAI2i , 9lami-a0a2u8xrn7

Citations formats

Conn CE, Bythell-Douglas R, Neumann D, Yoshida S, Whittington B, Westwood JH, Shirasu K, Bond CS, Dyer KA, Nelson DC (2015)
PLANT EVOLUTION. Convergent evolution of strigolactone perception enabled host detection in parasitic plants
Science 349 :540

Conn CE, Bythell-Douglas R, Neumann D, Yoshida S, Whittington B, Westwood JH, Shirasu K, Bond CS, Dyer KA, Nelson DC (2015)
Science 349 :540